did you ever run desktop-effects-kde4(or another compiz configuration) program as root? If so, that is probably why you cannot write to that file as your normal user (since it now had root privileges)
you can fix this by running "sudo rm /home/deda/.config/compiz/compizconfig/Default.ini" and rerunning desktop-effects-kde4. Do not run any compiz configurator as root (since most also write to this same file,and there is no need to)
The first solution is the way it should work,
did you ever run desktop- effects- kde4(or another compiz configuration) program as root? If so, that is probably why you cannot write to that file as your normal user (since it now had root privileges)
you can fix this by running "sudo rm /home/deda/ .config/ compiz/ compizconfig/ Default. ini" and rerunning desktop- effects- kde4. Do not run any compiz configurator as root (since most also write to this same file,and there is no need to)